Ball-bearing.



H. WKING 8L C. G. S'DERLUND.

I BALL BEARING.

APPucama msn usual. 1913.

lfj' V Patented Apr. 20, 1915.

2 SHEETS-SHEET l.

EMS,

H. wams & c. G. SUDERLUND.

BALL BEARING.

APPucATloN msn DEC. 31. 1913.

Patntea Apr.2o,1915.

2 SHEETS-SHEET 2.

narran sacarse' PATENT ormoni Heivmxwrxme AND cARLeUsTAF SDERLUND, or-GoT'rE-Nnone, SWEDEN.

Baur-BEARING.

Specification of Letters Patent.

Patented Apr. 2o, 1915.

Y Appncafion sied December 31, 1913. nserial No. 809,756.

' useful Improvements in Ball Bearings for box.

Shafts Loaded from the One Side, as Axle? Boxes or the like, of which the following is a specification. 1

, Our invention relates to ballA bearings for axles or shafts loaded from only one side, particularly car axleboxes; andit consists in the peculiar and advantageous ballbearing hereinafter described and denitely claimed.

In the drawings accompanying and forming part of this specification Figure lisa .longitudinal section of a -cai axle ball bearing box. F 2 is a cross section of the same Fi' v3 is a'cross section of a car axle ball bearing box on a somewhat modified construction. Fig. 4 is a 4side elevation of an outer ring or b all racc .of the bearing.

k Fig. 5 an'end elevation of the same part as illustrated in Fig. 4. Fig, 6 is a-part of a cross section through' the o'uter and inner ring on an enlarged scale. Eig. 7 is an end `view of the axle box "'ith the outer ringpartly in section. Figf is a sectional view ofthe ball, cage on an enlarged scale Fig. 9 is a similar view of the same part in another working position.

The ball bearing, as already known, is huilt up in an axle box l and consists in an inner ring'or ball racc 2 lixed to the axle journal 53, an outer ring or ball race 4, and, between the rings, one or more rows of balls 5, held by a ball cage G provided with a plurality of small chambers, each containing j one of the balls 5.

According to one mode of construction,

Athe inner vring 2 constitutes a solid socket and the ball cage 6 a cylinder shaped sleeve (Fig. 3). From the upper part'ofthe box proper there extend two tongue-shaped portions 7, each of which is connected with the box l at a suitable distance from the line of resultant of thelOad, z. e. at a. point about.

. top of the box the'tongues are'connected cylindrical outer Fig. l0 is a sectional view of the inspection device. f

the outer'ring Aeis caused to bend slightly r struction 'of the upper portion of the box,

the load from the car spring is transmitted to the bearing on the two sides, thus cansing the box to sli htly deflect, and the semiall race to closely embracecg,

the. axle'jonrnal, pressing down the balls 5 -towardthe inner ball -race,'on, practically speaking, Athe wholev upper half part of the bearing instead of only on a single ball'or the' top of the bearing.

According to the second mode of construction, the outer ring or race 4 is embraced by a slightly elastic vhorse-shoe .shaped casing l'l placed in the upper part of th box. Preferably the outer ring 4 as well as the inner ring 2 and the casing l1, instead of being each a single piece, may be divided into a plurality. of narrow strips. each containing 'only a single row of balls.

To produce a uniform load on all the balls of the upper half part of the bearing, the f-asings ll are pressed toward the u er half race. by means of spiral springs 12 isposed between the casings and a cap piece 13, supporting the Ycar spring, and, secured to the box. by screw bolts 1 4. Preferably the` springs l2 are so arranged in relation to the center line of the axle journal 3 that there is one spring straight above 'the center and. one or more springssymmetrically placed on each side of the perpendicular line through the center, Fig. 2. The tension of thcpsprings .12 may be chosen so that the casing ll and thereby the upper portionpof around the. upper bearing surface -for the above mentioned purpose. This bending may ,of course be very little and consequently does not cause unduly high strains in the material. l

To prevent the balls fromfalling down when passing the lower half portion of the race', any one oiE the following devices may be used. i,

In' the first mode'of eonstructionthe small chambers mentioned of theball cage 6 are cylindrical and arranged in circum'f'eren,tial as well as longitudinal rows. A protecting sleeve ormantle 15 provided with a'plurality of holes spaced' exactlymequal to the 40 a ball gets crushed the pieces fall down out chambe'r in the cage, and the balls are put' through theholesin the mantle 15 into the respective chamber in thefcage (Fig. 3.). After that, the mantle is turned a littlenon .`:he cage, s o that the holes in the mantle receive an eccentric position relatively to the balls, Fig. 8, and will then retain 'the -lalter within-their respective chambers, vallowing a free rolling movement of the `balls but preventing them from falling down as 'According to another inode of construction, the chambers in the cage are full cylinders and the balls when passing the lower half portiouof the race are supported by a narrow wedge-shaped -ring 1G one under each row of balls with the edge 17 bearing lower ring may either form a part of the outer ring 4 or may be a separate ring half 18, which isfcarried at each side of the casing 11 by the spiral .springs 19,20, Figs. '2 and 7, s as to execute a'soft pressure against the balls situated beneath the'journal. On each side of the outer ring 1 there is a. set screw 21 projecting into a slot in the side of tliering 18, securing said ring 1S from vfalling down as Well as the outer ring 4 fiombeing turned inthe box and simul` :taneously limiting the upward movement of the ring 18.

Aslong' as the balls remain unbroken they are prevented from falling down by the rings 16 or 18 when passing the lower portion of the race. As soon, however, as

of the cylindricalchambers in the cage, this because the breadth of thev rings 16 or 18 is considerably sniallerthan tliediaineter of the balls. If the ring 16 is made right in Fig. 1) the ring portion 16,4 may preferably e slightly eccentric lso )as to effect the desiredelastic bearing against the balls.

. In the bottom 22 ofthe box l beneath the axle journal 3, there is a cavity 23 .formed in a slide 24, which closes oil-tiglit in the l10x.- This slide can be drawn out to such an extent that the cavity 23 arrives outside -the box (Fig. 10), in which vposition the cavity as well 'as the box remain oil-tight elosed,owing to the rear portion/'of the slide,

in order to save theoil in the bottom of tlie box. The drawn out position of the slide i is limited by a stopping device, which conesA sists for instance in a slot 25 .in the slide 'and a stationary pin 26 projecting into the slot and bearing against the end of the lat- I 'a part ofI tlieouter ring 1 (as shown by the two rings on the ter. When fully closed the slide vmay be se cured by means of or the like.

Should a ball 5 bef damagedthe broken parts fallv through the hole o f themantle 15 beside the edge of the rin'g 16- or 18 and down. into the cavity 23.,A By drawing-out` the slide 24, it will thus immediately be a screw connection 27 recognized if one or more offthe balls have been broken and that it is,'necessary to repair the bearing. In order to prevent the parts of the broken balls from becoming jammed between the edge of the cavity 22 and the front wallof the cavity 23 thus reventing the drawing of the slide, theot` tom of the cavity 23 is inclined backward so that anyball part resting thereonl and reaching above'the edgeof the cavity 23 may be forced'up 'on the inclinedi-Wall of the box cavity.-

The a'xial load as already known is taken, up by end ball bearings. against, the balls Fig. l, 4 and 5.- This inner ball race also'when passing the under portion of the race, whereby a uniform -wear is eli'ected, and the removing of the brokenw;

' parts of the balls is facilitated.4 A'

When mountingthe b'eaiingit must. be obf served that the springs 12 are not too strong 2 to prevent the cap' piece 13 from touching the casing 11 as soon as the bearing becomes loaded by the weight of the car. ,'Unloaded,

however, a narrow space ought to be left betweengthe casing 11 and the cap piace 13.

The springsl 12 consequently merely'fbringg `about the mentioned slight bending' of the.l

casing but by no means take upl theactual load on the bearing.

AIt will be gathered from the foregoing that in connection with a single-circular series of balls weV employ ball-surrounding.-

means, arranged in the same vertical plane' as the single series of balls and comprising upper and'lower portions, the upper or loaded portion being constructed and arrangedfto be deflected around the balls on the top of the journal, and the lower or-un-` loaded portion being'- coiistructed and ar` ranged to rest under and'in the samevertical planeas the circular series of balls and to support erfect balls and at the-same time permit bro en balls to freely gravitate from the series. Y

Having now' particularly de iscribed- V and Y ascertained ther nature of oursaid invention and in what manner the sameis to be 'performed, We declare that whatwe claim isi- 1,. In a ball bearing, the combintion of f box, a .journal arranged therein, i ciculai seris of balls, means in the`v boit` and bearing on the upper balls ofthe .series and con mesma i v'-structe'd and arranged to enable said balls Ivi A to support-the box,"a ballicage surroundingv the journal andc'contanin'g the balls, means opposed to the lower balls of the series and constructed and arranged to prevent intact balls Afrom dropping, from the cage and to allow broken balls to fall therefrom, va slide having alimited movement in the lower portion of the box and also having a receptacle arranged to receive broken balls and pieces ofballs, and means detachably connected with the box for normally Aholdingthe sl-ide against outward movement.

opposed to the lower balls of the series and' vconstructed and arranged to prevent intact balls from dropping from the cage and to allow broken balls to fall therefrom, a slide arrangedV in the lower portion of the box and having a longitudinal groove and also having a 'receptacle arranged to receive broken balls and pieces of balls, arid a screw connectionthreaded in the box and connected in swiveled manner withy the outer end of the slide.

B. Inga ball bearing, the combination of a box,'a journal arrangedtherein, a circular series of balls, means in the box and bearing on the upper balls of 'the series and constructed andr arranged to enable said balls to support vthe box, a ball cage sur` rounding the journal and containing the balls, a curvilinear ball-support having a narrow edge opposed to the lower balls of the series', and means in the' lower portion of the box constructed and' arranged to receive broken balls or ball pieces.

4. In a ball bearing, the combination of a b'ox, a journal arranged thereirna circular series of balls, a ball cage surrounding the journal and containing the balls, a ring surrounding the balls and opposed thereto;

the lower portion of the ring being wedgef shaped in 'cross-section and having a sharp edge opposed to the lower balls, and means -in the lower p'o'rtion of the box arranged to receive broken balls and piec `s of balls.

5. Ina ball bearing, the ombination ofl a box, a journal arranged therein, a clieular series of balls, a ball cage surrounding the -journal and containing the balls, means in the box and bearing on the upperballs means in the lower'portion of the box arranged to receive broken balls orball pieces.' 6. In a ball bearing, the combination of a box, a journal therein, a circular series of balls around the journal, and ball-surrounding means, arranged in the box and disposed in the same vertical plane as the eircular series of balls and comprising upper and lower portions', the upper or loaded por tion being constructed and arranged to be deflected around the balls on the top of the journal, and the lower or unloaded portion being construded and arranged to rest undei-'and in the saine vertical" plane as'the circular series of balls and to support per- -iect balls and yet permit broken balls to freely grvitate from the series. Y

7. ln'a ball bearing, the combination oi' a box, a journal therein, a circular series of balls around the journal, and ball-surrounding means, arranged in 'the bex and dis* posed in the same vertical plar cular series-"of balls and com and lower portions, tbe upper ction being constructed and dcllected around the balls on l, top of the journal, and the lower or unloaded portion being provided `with a narrow edge opposed 'to and arranged under the balls' and in the same plane as the Vertical center thereof to support perfect balls and yet permit broken balls to freely grayitate from the series.

8. In .a ball bearing', the combination of a box having upwardly reachingv tongueshaped portions thereon at points at the sides of the upper portion of the box, a journal arranged in the box, a crcular .series of balls' around the journal, and ball-surrounding means, -arranged inthe box, at right-angles to said tongue-shaped portions, and disposed in the same vertical plane as the circular series of balls and comprising upper and lower portions, the vupper or 'loaded portion being constructed and arranged to be deflected, around the balls on the top of the journal, and the lower or unloaded portion being constructed and arranged to rest under and in the same Ver tical plane as the circular series of balls and to support perfect balls and yet permit' broken lballs to freely gravitate from vthe series.

V9;'In a ball bearing, the combination of a box, a jgurnal therein, acircular series ol balls around the journal, ball-surrounding means arranged in` the box and disposed in thc same vertical plane as the circular 'series of balls and comprising uppcrrand lowes portions, the upper or loaded portion beingv .constructed and arranged to be deflected aroundthe balls on the top of the journal andthe lower orunloaded .portion bing c' nstructed and. arranged to'rest under and 1u the same vertlcal plane as the circular series of balls and to supp rt perfect balls and yet permit broken. bal sto 'with the box, a casing arran ed" on the up- 1 reely gravitate from tne series, a cap" "ecelconnected periortionof the ball-surroundinf-mens,

and resilient means interposed between the cup-piece and said casingv `10. 'In a ball bearing, the ombination of' I a' b ox, aiournal therein, rbirclar series oi. balls around the journal, s and a ring' surand arranged in the same plane as rounding v -the circular series of ballsv and having an g l :upper loaded portion'constructed and ar- {1 0' ranged to bekdeectedon the upper balls fand also having a lower portion on which is a-narrow edge portion arranged in the v 1,186,07f7l same' plane as the vertical .centers'of @he y balls 'and contacting with and .supportingv i. 15 In testimony whereof we-have hereunto the lower balls.

set our hands 1n presence of nwo subscrib-l ing witnesses.

vHENRIK WIKING.

vCARL GUSTAF SD'ERLUND.

Witnesses:

' ILSE Lumix,-

ERIG Wnmomr. 

